Answer:
Use a quote
Step-by-step explanation:
Elizabeth has clearly made use of a Theodor Seuss Geisel´s (Dr. Seuss) quote, but not only she has read over his words to enlight or move her audience feelings, she has also told the audience who the author of the quote was (one, that of course is highly recogniced by a high petrcentage of the american population), and she tells them her speech will be routed towards the reaffirmation of those words.
Elizabeth not only simply quoted Dr Seuss, she´s using the quote itself to get the most of the audience attention.
Hope this helps!